RC India
Welcome Guest, please login or register.
 
Pages: [1]   Go Down
0 Members and 1 Guest are viewing this topic. Topic Tools Topic Tools 
Read
« on: December 11, 2017, 08:33:49 AM »
pathak.suril
Plane Lover
Active Member
**

Reputation Power: 1 
pathak.suril has no influence.
Offline Offline

City: DHROL
State: Gujarat
RC Skills: Intermediate
Posts: 10
Join Date: Jul, 2016




Hello friends,
          I have purchased Avionic RCB 6i.while i was using my transmitter,i don't aware that i have connected 3cell lipo battery instead of 1/2 cell lipo battery.after turning on my transmitter with 3 cell batery,within 2-3 seconds,ICs had burnt.when i opened it i came to a decision that Voltage regulator ic XC 6206 might burnt.
           So i tried to buypass that IC by giving 5V to transmitter.according to specifications of IC transmitter must be run on 5v after buypass that IC.
            After that modification,i tried to turn on my transmitter.it turned on but all functions except model selection are not working.i can't be able to understand the reason behind it.
            Is there any other reason for this?Is there any chance to damage Module/Microcontroller due to over voltage?

IMG_20171210_173012.jpg
Avionic RCB 6I overvoltage
* IMG_20171210_173012.jpg (111.35 KB, 800x791 - viewed 197 times.)
Logged
 

Read
« Reply #1 on: December 11, 2017, 09:48:46 AM »
saikat
Plane Lover
Forum Hero
*****

Reputation Power: 14 
saikat has no influence.
Offline Offline

City: Tezpur
State: Assam
RC Skills: Intermediate
Posts: 1094
Join Date: Jul, 2009



what is the microcontroller ?

very few modern microcontroller run on 5v - most of them
run on 3.3v

what was the part number of the voltage reg ?
Logged
 

Read
« Reply #2 on: December 11, 2017, 10:22:46 AM »
pathak.suril
Plane Lover
Active Member
**

Reputation Power: 1 
pathak.suril has no influence.
Offline Offline

City: DHROL
State: Gujarat
RC Skills: Intermediate
Posts: 10
Join Date: Jul, 2016



Microcontroller chip used here is stm8s105c6t6 and damaged ic is voltage regulator ic XC6206p332pr.
Logged
 

Read
« Reply #3 on: December 11, 2017, 12:36:29 PM »
saikat
Plane Lover
Forum Hero
*****

Reputation Power: 14 
saikat has no influence.
Offline Offline

City: Tezpur
State: Assam
RC Skills: Intermediate
Posts: 1094
Join Date: Jul, 2009



well I guess you're out of luck

the voltage regulator is for 3.3 volts - the 8th and 9th digits specify output
voltage as per the data sheet.

the microcontroller is also rated for 3.3 volts.

Logged
 

Read
« Reply #4 on: December 11, 2017, 01:17:25 PM »
rajjames
Heli Lover
Active Member
**

Reputation Power: 1 
rajjames has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Beginner
Posts: 84
Join Date: Jan, 2015


Re:

The microcontroller is rated for a supply voltage of 2.95V to 5.5V as per datasheet:

http://in.element14.com/stmicroelectronics/stm8s105c6t6/mcu-8bit-stm8-16mhz-lqfp-48/dp/1706222


Sent from my CP8676_I02 using Tapatalk
Logged
 

Read
« Reply #5 on: December 11, 2017, 01:31:44 PM »
pathak.suril
Plane Lover
Active Member
**

Reputation Power: 1 
pathak.suril has no influence.
Offline Offline

City: DHROL
State: Gujarat
RC Skills: Intermediate
Posts: 10
Join Date: Jul, 2016



Yes you are right.But microcontroller is in series with this 6206 voltage regulator ic.so when i apply over voltage to circuit,IC will ahort circuit and microcontroller will not damage.because today i tried to turnon transmitter without burnt IC.it turned on but all functions except model selection are not working.if microcontroller is damaged then function of model selection should not be able to work.
Logged
 

Read
« Reply #6 on: December 11, 2017, 08:27:48 PM »
saikat
Plane Lover
Forum Hero
*****

Reputation Power: 14 
saikat has no influence.
Offline Offline

City: Tezpur
State: Assam
RC Skills: Intermediate
Posts: 1094
Join Date: Jul, 2009



yes the uc is rated upto 5.5v , I  posted without checking the datasheet.
most stm32's have 3.3v so I assumed that is the max

contact rc bazaar if they can give you a copy of the firmware .... reflash and try.
Logged
 

Read
« Reply #7 on: December 12, 2017, 07:28:48 PM »
pathak.suril
Plane Lover
Active Member
**

Reputation Power: 1 
pathak.suril has no influence.
Offline Offline

City: DHROL
State: Gujarat
RC Skills: Intermediate
Posts: 10
Join Date: Jul, 2016



There is no need to update/upload firmware.Due to over voltage,Hardware may burn.so it is not a software related issue and no need to modify a firmware.
Logged
 

Read
« Reply #8 on: December 13, 2017, 08:14:36 AM »
saikat
Plane Lover
Forum Hero
*****

Reputation Power: 14 
saikat has no influence.
Offline Offline

City: Tezpur
State: Assam
RC Skills: Intermediate
Posts: 1094
Join Date: Jul, 2009



unless your microcontroller is damaged physically   - it is a firmware issue ,
are there any other components which show signs of damage ??
Logged
 

Read
« Reply #9 on: December 14, 2017, 09:43:50 AM »
pathak.suril
Plane Lover
Active Member
**

Reputation Power: 1 
pathak.suril has no influence.
Offline Offline

City: DHROL
State: Gujarat
RC Skills: Intermediate
Posts: 10
Join Date: Jul, 2016



It seems like any other part is not damaged except XC6206 Voltage regulator IC.
I can't understand that how can we relate overvoltage issue with firmware of microcontroller.if i am giving over voltage to XC6206/Microcontroller than it can damage XC 6206/Microcontroller(Hardware),because i think this is Hardware Damaged Issue and it will not affect Firmware of microcontroller.please Explain your answer in detail so that i can understand.
Logged
 

Read
« Reply #10 on: December 14, 2017, 12:25:08 PM »
saikat
Plane Lover
Forum Hero
*****

Reputation Power: 14 
saikat has no influence.
Offline Offline

City: Tezpur
State: Assam
RC Skills: Intermediate
Posts: 1094
Join Date: Jul, 2009



i will not be able to give you a chip level explanation .... but look at it this way

you are saying that no other component apart from the vr is damaged and the tx is working
apart from from the model select fn which is a part of the software.
so logically it is the software that is corrupt.
any way ...what have you got to lose ... ? flashing with original firmware can only better it or leave it in the same state it is now.
Logged
 

Read
« Reply #11 on: December 14, 2017, 04:32:24 PM »
rajjames
Heli Lover
Active Member
**

Reputation Power: 1 
rajjames has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Beginner
Posts: 84
Join Date: Jan, 2015


Re:

If there is an external EEPROM/flash memory chip to store the model details, that memory chip could have been damaged due to 5 volt(if that IC can only take 3.3V). Check to see if there is any additional IC that you can find on the board.

Sent from my CP8676_I02 using Tapatalk
Logged
 

Read
« Reply #12 on: December 15, 2017, 07:36:03 PM »
pathak.suril
Plane Lover
Active Member
**

Reputation Power: 1 
pathak.suril has no influence.
Offline Offline

City: DHROL
State: Gujarat
RC Skills: Intermediate
Posts: 10
Join Date: Jul, 2016



I Checked that PCB Provided in Transmitter.Only Two 2 ICs are Mounted on PCB.First IC is voltage Regulator IC and Second one is Microcontroller.
Logged
 

Read
« Reply #13 on: December 15, 2017, 07:44:10 PM »
pathak.suril
Plane Lover
Active Member
**

Reputation Power: 1 
pathak.suril has no influence.
Offline Offline

City: DHROL
State: Gujarat
RC Skills: Intermediate
Posts: 10
Join Date: Jul, 2016



I Can Understand that Model Selection function is working but If we Look towards Firmware,it can not affected unless we change it.According to my point of view,Overvoltage can not damage firmware,it can damage hardware only.

Thank you for your reply and involvement. Smiley
Logged
 

Read
« Reply #14 on: August 20, 2018, 05:27:55 PM »
fxshoppe
Plane Lover
Forum Hero
*****

Reputation Power: 10 
fxshoppe has no influence.
Offline Offline

City: New Delhi
State: Delhi
RC Skills: Beginner
Posts: 686
Join Date: Aug, 2014



Hi where u able to 6206 ic in 'India
Logged
 

Pages: [1]   Go Up
Jump to:  

Related Topics
Subject Started by Replies Views Last post
avionic RCB 7x not able to connect « 1 2  All »
Radios and Receivers
Dr. Abhishek Agrawal 28 11367 Last post May 10, 2015, 08:48:07 AM
by kiran rc
Avionic 7c Rx tx help
Radios and Receivers
arun21 2 1357 Last post November 24, 2014, 08:32:26 AM
by sooraj.palakkad
Avionic ESC 40A NIB
For Sale
hemanthtguru 0 610 Last post July 29, 2015, 12:36:29 PM
by hemanthtguru
Anyone using the Avionic RCB OS-10?
Radios and Receivers
Swapnil 4 1926 Last post December 16, 2015, 05:18:14 PM
by prabal276
Avionic 2826 1900kv Motor + Avionic 30Amp Esc For 1750 (incl. shipp.)
For Sale
priyamraj5 5 1396 Last post February 24, 2016, 10:30:15 PM
by priyamraj5